Option B is the correct answer.
Increased cardiorespiratory fitness
means the body makes more efficient use of oxygen requiring less to
function as well or better than when you are less fit as judged on this
index.
I would go for B. Production of immune cells
Answer:
The correct answer is - the energy bars.
Explanation:
Fortified foods are the foods that have additional nutrients like nutrients and vitamins and other essential substances so they can be easily available to the American people.
These foods such as the energy bars have the highest density of the calcium in it as they are fortified and are protected to external attack.
Thus, the correct answer is - the energy bars.